Re: [PATCH] v4l2-ctl: Fix test_ioctl cmd type

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Hi Paul,

Thank you for the patch.

On Fri, Jun 19, 2020 at 05:27:58PM +0900, Paul Elder wrote:
> ping
> 
> On Thu, Jun 11, 2020 at 11:34:14AM +0900, Paul Elder wrote:
> > test_ioctl uses int for the ioctl cmd, while it should be unsigned long.
> > Fix this.

This matches the libc ioctl() prototype and the ioctl values (the _IOC
macro produces, if I'm not mistaken, an unsigned type) and should help
avoiding sign extension issues.

> > Signed-off-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>

Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

> > ---
> >  utils/v4l2-ctl/v4l2-ctl.cpp | 2 +-
> >  utils/v4l2-ctl/v4l2-ctl.h   | 2 +-
> >  2 files changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/utils/v4l2-ctl/v4l2-ctl.cpp b/utils/v4l2-ctl/v4l2-ctl.cpp
> > index e7b270cd..4972591e 100644
> > --- a/utils/v4l2-ctl/v4l2-ctl.cpp
> > +++ b/utils/v4l2-ctl/v4l2-ctl.cpp
> > @@ -306,7 +306,7 @@ static void usage_all()
> >         edid_usage();
> >  }
> >  
> > -int test_ioctl(int fd, int cmd, void *arg)
> > +int test_ioctl(int fd, unsigned long cmd, void *arg)
> >  {
> >  	return options[OptUseWrapper] ? v4l2_ioctl(fd, cmd, arg) : ioctl(fd, cmd, arg);
> >  }
> > diff --git a/utils/v4l2-ctl/v4l2-ctl.h b/utils/v4l2-ctl/v4l2-ctl.h
> > index b31be7f5..28e50471 100644
> > --- a/utils/v4l2-ctl/v4l2-ctl.h
> > +++ b/utils/v4l2-ctl/v4l2-ctl.h
> > @@ -300,7 +300,7 @@ typedef struct {
> >  
> >  // v4l2-ctl.cpp
> >  int doioctl_name(int fd, unsigned long int request, void *parm, const char *name);
> > -int test_ioctl(int fd, int cmd, void *arg);
> > +int test_ioctl(int fd, unsigned long cmd, void *arg);
> >  int parse_subopt(char **subs, const char * const *subopts, char **value);
> >  __u32 parse_field(const char *s);
> >  __u32 parse_colorspace(const char *s);

-- 
Regards,

Laurent Pinchart



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